Full-stroke mechanism for adding-machines.



R. E. BENNER. FULL STROKE MECHANISM FOR. ADDING MACHINES.

' APPLIOATION FILED JAN. 22, 1907.

' Patented-Nov. 10, 1908.

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R. E. BENNER.

FULL STROKE MECHANISM FOR ADDING IMLQGHINES. APPLIOATION FILED JAN. 22, 1907.

Patented Nov. 10, 190% 3 sHBETs sHBBT 2.

EDT/7m R, E. BENNEB, FULL STROKE MECHANISM FOR ADDING MACHINES.

APPLICATION I'ILB'D J'AYL'QQ 1907.

Patented Nov. 10,1908.

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RUSSELL E. BENNER, or person, Minnie-an; ass euon roeunaouons ADDING MACHINE COMPANY, or DETROIT, MICHIGAN, A. CORPORATION or MICHIGAN.

FULL-STROKE mon'anrsiu; ronennms-macnmns.

Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed January"22, 19037. SriaJ'No. 353,489;

To all whom it may concern:

Be it known that I, RUSSELL E. BENNER, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented (certain new and useful Improvements in Fu1l Stroke Mech-.- anism for Adding-Machines, 'of which the essential that there shall be effective means for compelling full strokes of the operating handle. Otherwise it would be a very simple matter to make themachine go wrong.

However, by power when such a machine is operated there is no need for the full stroke safe-guard and in fact it becomes an objecf tionable feature because of tendency to become locked when the machine is run at high "speed. Of course it will be understood that when a machine :ofthis kind is operatively connected with .a motor full strokes of the parts operated upon by the motor are bound to-take place and it is only when. such parts are under the direct-control of the operator that. resort need he had to \expedients for preventing irregular movements of them either intentionally or by accident.

The object of the' present invention is to provide for automatically rendering a stroke device efliective in a machine of the kind mentioned whenever'it equipped for operation by hand andto keep such In machines of th in I stroke device out offoperation so long as the 1 "d mentioned it is customary to make the operating handle detachable and when the machine is to he power-driven the handle. is left 0E. In the form of embodiment of the present invention as illustrated and described herein the act of applying such a detachable handle to machine effects the displacement of means which in the absence of the handle operate-;

,to disable the full stroke device.

In the accompanying drawings illustrating' such embodiment of the invention Figure 1 represents partly in right-sideelevationand pantly in vertical section an adding and listing machine of the well-known Burroughs type w th an electric motor applied 1 thereto-and full stroke mechanism of the present invention, the operating handle being detached; Fig. '2 represents on an enlarged' scale and in similar elevation the 1 full stroke mechanism without the balance of the machine and with the handle still de- ..-tached; Fig. 3 is an exactly similar view ex- ;cept that the oscillating member carrying full stroke mechanism is-shown at the opposite end of its stroke as compared with Fig.

2 and a corresponding change in the relative positions of some of the parts, Fig. 4: is a' view similar to Fig. 2 but showing the operating handle attached and the changed relation of parts resulting thefefr6rn; 5 is a section taken substantially onthe line 55 of Fi 4; and Fig.6 is a section taken substantial y on the line 6 6 of TWhile by preference the invention islrere shown and described as applied to theiBurroughs type of adding and listing machine it is to he understood that the inventio -is not necessarily limited to such particularapplication.

For details of the type of machinemen- .tioned reference may be had to the Burroughs Patents Nos. 604L963 and 505,07 8 of June 12, 1893. It will sufiice for the purposes of the present specification to floriefly point out a limited number of Burroughs parts. v 3

The reference numeral 300 designates the "usual oscillatory tubular shaft journ'aled in a suitable hearing on the right-hand frame piece of the machine, this shaft being shoul? dered at its outer, end as shown in Fig. 5 full for rotative engagement with thelsimilarly shouldered boss or huh of the familiar handle lever 368 The latter'is formed beyond said boss or hub with a stud 352poin ted at its end to provideian inclined surface which,

when the handle is applied 'by introducing the stud into the tubular shaft, operatesto displace a retaining latch 350 a wellknown manner. The tubular shaft has secured to it a sector 311 which .as usual has a limited segmental marginal portion 311 formed with peripheral notches. The usual pawl 313 is pivoted to the framework and connected by a spring 384 with a 'iixe'd stud and this spring tends to hold-the pawl .snlos'tantially radial with reference to the sector. The "effect of this arrangement-is well understood, the sector in its oscillations caus- .ing'the notched peripheral portion to wipe fpasjt the pawl, turning the latter on its pivot 11 these notches when the machine is operated against the tension of the spring and the notches preventing any reverse movement until the segmental portion 311 of the sector has passed by the pawl when the latter rights itself'for. tilting in the opposite direction when the reverse movement of thesector takes place. 'Of course any attempt to reverse the movement of the sector before completing its stroke 1n oned1rect1on would. cause the pawl to lock in one of thenotch es. According to the present invention-it is proposed to nullify the effect of by power.- r y In the drawings the reference numeral 3765 designates an electric motor suspended from the bottom of the machineand arranged to drive the machine through the medium of suitable connections whose details need not be described. Suflice it to-saythat the motorrotates one member of a clutch whose other member, rotates. a cam, the latter operating-"through a pitman to rock the familiardrive-shaft 100 of the add-' ing machine, which 'driveshaf-t is connected by a link 366 with the sector 311 The usual springs 180 .restore the shafts 100 and 309 after their operation brought about by. pulling forward a handle applied to the lat- .ter shaft or through the described connec-- tion with the motor.-

When the machine'is to be run by power the handle, is detached and under such circumstances there is presented to. the full stroke pawl313 a plain edged surface in stead of the notched periphery of the sector. For this purpose asegmental plate 319 is arrangedon the inner side of the sector, conforming in general outline with the segmentalportion 311 of the latter. This plate is formed with a pair of'cam slots .3191; engaged by studs 353% projecting inwardly fromfthe sector. The slots extend obliquely for the most part and on such angles that.

upward movement of the plate with'referenceto the sector will bring the other edge of the late flush'with the outermost portions of-the notched edge of the sector as clearly shown in Figs-1,2 and 3. The moyement of the plate in the opposite direction would cause it to retreat from the notched periphery of the sector to a point beyond the bottoms of'the notches as shown in Fig.

1 action of the pawl 313 4. It will .be seen that this arrangement provides for nullifying the effect of the notches and thus eliminating the full stroke The cam slots have limited inner portions extending in the direction of the length of the plate so that pressure of the pawl against the edge of the plate can have no effect to push back. the latter; The plate has a centrally-located lug 319 projecting inwardly from its. rear edge and pivotally connected with a link 317 which is in turn pivotally connected with one arm 318 of a bell crank lever. The latteris pivotedat 35% to the sector and its other arm 318?} is curved to direct it toward the centerof the shaft 300 The latter is slotted in one side. 'asshown in Fig. 6 to: re-

.ccive this arm of the bell crank lever'wl1ich has a beveled end to protrude into the opening of the shaft as shown in Figs. 1, 2, 3 and 6.,A spiral spring 386 is connected atone end with the sector and at the other with thelink 317 and exerts itself to lift the plate 319 and hold it'at effectiveposit'ion. This I I condition obtains so long 'asthe handle remains unattached and consequently the pawl I 313 is deprived of function. f O-f course the spring 386 also acts to yieldinglyproject the beveled extremity of the bell crank arm 318% into the opening of the shaft 300*. Under these conditions the machine can be powerdriven without any danger of a lock-up in the full stroke mechanism under high speed-- It will be notedthat when the plate 319 is i. in effective position it projects at its upper It has already. been mentioned that the handle is customarily formed with a stud having a pointed end. This is availed of for the purpose of displacing 'the'devices' -.which nullify the effect of the full stroke.

Then the stud of. the handle is pawl. thrust into the tubular shaft the inclined surface of the stud-point operating against the beveled end of the bell crank arm 318%- will force the latter back and exclude it from the bore of the shaft as shown in Fig;

5. The movement of the bell crank lever" thus produced operates through the link 317 to draw down the plate, 319 against thestress of the spring 386 and the effect heretofore described is brought about through the co-action of the studs and cam slots, via,-

that of withdrawing the o'uter edge of the plate to a point in 'rearof-the bases of the sector-notches. The 'fullfs'troke pawl will then of course cooperate as usual with the segmental portion of the sector and compel full strokes of the latter by the handle.

I While the construction above described will be seen to thoroughly fulfil the object primarily statedit' is to be-understood that such, construction is susceptible of consider able modification withoutnecessarily departing from the spirit and. scope of the invention.

What is claimed is: I 7 1. In a machine of the character described the combination with a reciprocating drivsome i I ing memberand-a double acting tullstroke deviee'therefor to compel complete movements thereof in both directions; of means :for automatically rendering said full stroke machine by hand, means for operating the machine by'pow-er, a full-stroke device, and

means 'forrendering the same operative or inoperative according as the machine is be ing operated by hand or by power.

3. Ina machine of the character described, the combination of :a power drive, a fullstroke device, means for disabling the latter, and a-detachable operating handle for the machine, with provisions for enabling the handle to the machine.

full-stroke device by the application of said 4.*In a machine ofthe cliaracter described, 1

the combination of oscillatory driveshaftga handle adapted to be detachably 'en- .7 gaged with said-shaft to oscillateit, a power drive operatively connected with said shaft,

a tnll-strolte sector carried'by the latten'a full-stroke pawl arranged to cotiperate with i said sector, and means for preventing such oojiperation dnring operation of the machine by-the power drive, with provisions .itor dis? ablement of said means by the application of the operating handle to the oscillatory shaft.

5. Ina machine of the character described, the combination of an oscillatory driveshaft, a handle adapted to be detachably enaged with said'shaftto oscillate it, a power 1 drive operatively connected with said shaft,

a sector carried by the latter and having a notched peripheral I portion, a reversible I spring-actuated pawl to engage said peripheral portion ot th'e sector and compel :tul'l:

strokes in both directions, a plain plate lying adjacent the notched peripheral portion of E the sector andad-apted to engage the pawl and prevent its entrance into the notches, and means for displacing said plain plate by the application of the handle to the oscillai adjacent to the notched peripheral portion 6. In :a machine of tl-rekoharacter described, 5 the combination of an' oscillatory driveto-ry shaft.

shatt, a handle adapted to he detacha bly zen- :gaged :said shaft to (oscillate it, a power drive ropenatively connected with said shaft,

a sector carried by'the latter and having notched peripheral portion, a reversible;

spring-actuated pawl to engage said perip'h the :sector and spring-held to engage the pawl and prevent its entrance into the notches, and means for j'displacirrg said plain f:

' plate by the application of the handle tothe 1 ably engaged with said shaft to oscillate it,

the combination of an oscillatory wdriveshaft, handle adapted to be detachably engaged with said shaft to oscillate it, a power drive operativelyconnected with said shaft, asector carried by the latter. and Having a notched peripheral portion, a reversible ecal portion of the sector and compel full strokes in both directions, a plain plate lying adjaceiit the notched peripheral portion of the-sector and adapted to engage the pawl and prevent its entrance into'the notches, said plate projecting beyond one end of the notched portion of the sector, and means for displacing said plain plate by thelapplication of the handle to the oscillatory shaft.

"'70 'springsactuated pawl to engage said-periph '90 8. In a machine of the character'described,

the combination of an oscillatory driveshaft, a handle adapted to be detachably engaged with'said' shaft to oscillate it, a power drive operatively connected with, said shaft, a sector carried by the'zlatter and having a notched peripheral, portion, a reversible spring-actuated pawl to engage said periph-- eral portion of the sector and compel full Y strokes in both directions, aplain plate lying no adjacent the notched peripheral portion of the sector and adapted to engage the pawl and prevent its entrance intothe notches,

cam-slot and pin connections between the plate and the sector, a spring impelling the 9 plate longitudinally in one direction -and through the cam-slot and pin "connections holding said plate in efl'ective'position, and means for moving the platelagainst the stress of said spring by application of the handle 'to the oscillatoryshaft.

.9. In a machine 0f the character described,

the combination of an oscillatory driveshaft, a handle adapted to be detachably en- .gaged with said shaft to oscillate it, a power drive'operatively connected'with said shaft,

a sector carried by the latter and having a notched peripheral portion, a reversible spring-actuated pawl to engage said peripheral portion of the sector and compel full strokes in both directions, a plain plate lying notches, said plate projecting beyond one end of the notched portionof the ,sector,

camsslot and pin connections between the (plateand the sector, a spring impelling the plate longitudinally in .one direction andthrough the cam-slot and pin connections holding said plate in eiiective position, and means for movingthe plate against the stress of .said spring .by application of the I handle to the oscillatory shaft.

110. In a machine of. the "character described, the combination ofan oscillatory drive-shaft, a handle adapted to be detach- :a power drivc operatively connected with sa1d-shaft,.a sector carried by the latter and having a notched peripheral portion, a reversible spring-actuated pawl to engage said ing a lever projecting into the path of the v and the plate. v 11. In a machine of the character de-' peripheral portion of the sector and-compel full strokes-in both directions, a-1plain plate lying adjacent the notched peripheral portion of the sector and adapted to engage the pawl and prevent its entrance into the notches, and means for displacing said plain plate by the application of the handle to the oscillatory shaft, said means comprishandle and connections between the same scribed, the combination of an oscillatory drive-shaft, a handle adapted to be detachably enga ed with said shaft to oscillateit, a power rive operatively connected wlth said shaft, a sector carriedby the latter and havingra notched peripheral portion, a reversible spring-actuated pawl to engage said .p peripheral portion of the sector and compel ull strokes in both directions, a plain plate I lying adjacent thenotched peripheral portion of the sector and spring-held to'engage the pawl and prevent 1ts entrance into the notches, and means for displacing said plain plate bythe application of the handle to the oscillatory shaft,- said' meanscomprising a lever projecting into. the path of the handle and connections between the same and the plate.

peripheral portion of the sector and compel" full strokes in both directions, a plain plate lying adjacent the notched. peripheral portion of the sector and adapted to engage the pawl and prevent its entrance 1ntothe notches, cam-slot and pin connections between the plate and the sector, a springims pellingthe plate longitudinally in one'- d1rec-' y tion and through the cam-slot and pin connections holding said plate in effective position, and means formoving the plate against the stress of -said spring by.applicat1on of the handle" to the oscillatory shaft, said l means comprisinga lever projecting into the path of the handle and a link connecting said lever with the plate. I

13. In a machine of the characterdescribed, the combin ation of an oscillatory l hollow. shaft,- an. operating handle having a pointed stud to enterthe hollow shaft and' constructed for rotative engagement with the latter, a sector carried by the-shaft and having a notched peripheral portion, a reversible: spring-actuated pawl to jengage said peripheral portion of the sector and compel full strokes inboth directions,a plain plate lying adjacent the notched peripheral portion of the sector and adapted to engage the notches, a-lever projecting-into'the opening 'pa-wland prevent its entrance into the.

of the hollow shaft for coaction with-the pointed handle stud, and operating connec r tions between the lever and the plain plate.

14. In'-, a machine .of the character described, the combination of an oscillatory hollow." shaft, an, operating handle having a.

pointed stud to enter the hollow shaft and constructed for rotative engagement with the 'latter,'a sector carried by. the shaft and have ing a notched peripheral portion, a reversiblespring actuated pawl to engage said peripheral portion of the sector and compel full strokes in both directions, a plain plate lying adjacent the notched peripheral portion-of-the sector and adapted to engage the notches, cam-slot and pin connections be awl and prevent its entrance into the tween the plate and-thesector, a spring im pelling-the plate longitudinally in one direc tion and through the ca'm-slot' and pin-pom.

the hollow shaft for coaction .with the pointed handlestud, and operating connections between the lever and the plain plate.

- In a machine-of' the character dc.- scrlbed, the .cornbination'of an oscillatory drive-shaft, a handle adaptedto be detachnections holding said plate in effective p'osit1on','a lever pro'jectinginto' the opening of ably engaged'with said shaft tooscillate it,

a power drive operatively connected with said shaft, a sector carried by the latter and having a" notched peripheral portion, a reversible spring-actuated pawl to engage said peripheral portion of the sector and compel full strokes inboth directions, a plain plate lying adjacent the notched peripheral portion of the sector-and adapted to engage the pawl and prevent its entrance into the notches, a lever proje'cting'into the path of v the handle and a link connecting said lever for the purpose described.

16. Ina machine of the character de scribed, the combination of an oscillato drive-shaft, a handle adapted to be detachably engaged with said shaft to oscillate it,

a' power drive operatively connected with said shaft, a sector carried by the latter and havin va notched peripheral portion, a reversib e spring-actuated pawl to engage said peripheral portionof the sector and compel ull. strokes in both directions, a plain plate lying adjacent the notched peripheral portion of the sector and adapted to engage the pawl and prevent its entrance into .i the, notches, a lever projecting into the path of the handda a linkconnecting said lever with the' plain plate, and a spring connecting'the sector with the lever, link and plate.

17. In a machine of the character d ewith the plain -plate; substantially as and I I scribed, the combination of an oscillatory hollow shaft, an operating handle having a pointed stud to enter the hollow shaft and constructed for rotative engagement with 5 the latter, a sector carried by the shaft and having a notched peripheral portion, a reversible spring-actuated pawl to engage said eripheral portion of the sector. and compel ull strokes in both directions; a plain plate 1o lying adjacent the notched peripheral portion of the sector and adapted to engage the pawl and prevent its entrance into the notches. cam-slot and pin connections betion, a lever projecting into the opening of the hollow shaft for coaction with the pointed handle stud and a link connecting the lever and the plain plate. a

' RUSSELL E. BENNER.

Witnesses:

J. G. VINCENT, R. S. MIELERT. 

